Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d9713afb598363…

MALICIOUS

PDF

58.9 KB Created: 2020-12-08 10:52:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 46e6de247cbf1a3cf43e7c5f3ad636dc SHA-1: 179c4d6764299e9f8ca654699c96545332769023 SHA-256: 72d9713afb598363bb12110066d791838cffc52671dc4286ef5f8d88308d40f2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/123?utm_term=betsey+johnson+watches+tj+maxx PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5fa20eb67da18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452381/normal_5fcad2efa24f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467950/normal_5fb6a7a72d33a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498986/normal_5fad2b51b1638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5fba424d0970b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412762/normal_5fab27f033a6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f8af292a53eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5d0859698b02c7f425fc5/t/5fc759939dfc2a40451e6051/1606900115469/talking_kitty_cat_sylvester_gets_paid_reaction.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/2004_vw_touareg_v8_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/97767578340.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0B 5296 bytes
SHA-256: ce270e3c7f9b9e66cc9c8e2c5779f171a17c50b70917e064d9d70784c8df54d7
font_01_sfnt_off0000be0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0D 9700 bytes
SHA-256: 2316e680ad968d556a3c660003f62d8929764d9261104ab71e794d761a6eaa67

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